Power-transmission mechanism



Dec. 6, 192.7.

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R. B. BUTTERBAUGH POWER TRANSMISSION MECHANISM Fiied 1'?, 19 e 2 Sheets-Sheet 2 Patented Dec. 6, 1927.

UNITED s fPjiTE'NT f'ofFFffci-g,

RALPH B. BUTTERBA'GH, `or "rnns'eora, wisconsin, Restkarten, )BY "manor AND MESN'E ASSIGNMENTS; 'or Soriana-Lr 'ro EDWARD f rfonrasgrmnnsco'ra, Wisconsin, AND oN-'ELHAILF ToJQLF.fM-AINJAnn-SAMEL J. mann,oTHUaNN-Enonrs,

- MINNESOTA.

rownncrnzinsnrssron "MECHANISM Application naamw-17, 192e. serial No. 109,627.

This invention relates `to an improved power transmission mechanism, particularly -adap'ted'tor use :to -transmitreciprocal motion to-.a driven member, a'nd moreparticularly relates -to such a mechanism adapted 'tor-use to opera-te the usual connecting rod of af pump. I

An object of-,the invention is tovprovide a power transmission -mechanism comprising an oi-l-tigh-tcasing, having means-tor ad- 4justa-bly Vsecuring itfto the usual tubular member or standard ot apu1np, and having pai-r o'l' oscillating Yarms operatively connectedtogether for simultaneous operation, said arms 'having means forconnecti-n'g them to the usual pump rod whereby, when the mechanism .is operated, reciprocal motion will be transmitted-to the pump rod.

A further object of lthe invention is to :provide sucha mechanism including'a pair loi rockshatts mounted in spaced relation and operatively connected together by-a k pair of gear segments, each rockshaft having an oscillating arm terminally 'secured thereto, and means connectingr it with afpump rod or other reciprocal member, the driving means VJfor said -rockshatts lhaving means co-operatingtherewit-h to counter-act outward thrust in vthe rockslratt bearings, caused by the usual tendency of the gear teeth operatively connecting said rockshafts, to separate the rockshafts when the mechanism is operating n under load.

Y lto the pump rod,v thereby rendering such mechanism safeand ool-proo'in operation. A further object is to .provide a lpower transmission mechanism including arpair of oscillating arms adapted to be connected -to the usualpump rod at points diametrically opposite with respect thereto, whereby all side strains will lbe ,eliminated `from the pump rod, said mechanism being of simple and inexpensive construction, whereby it may be manufactured ata minimum cost. @they objects of the inventionwill appear mounted therein in the usual manner.

Y -head -r 1s terminally mounted `upon the pum-p posite directions.

-from the following 4description and thefaccompanying drawings and wi-llbe4 pointed out=in the'annexed claims.

In the accompanying drawings there has been 'disclosed a structure-designed to carry out lthe various objects'ofthe inventiomvbut it lis to be understood that the-invention is not confined to the exact features shown, as various changes may "be made within Ythe scope of the claims which follow.

In the accompanying drawings:

Figure l is a diagrammatic view showing Ya port-ion of a pump standardihaving the improved power transmission mechanism mounted thereon and operatively connected to lthe usual ,pump rod thereof;

Figure 2 is an enlarged vhorizontal.plan view on the line 2-l2 ofi-Figure 3,; ,y

Figure 3 is a iverticalfsectional view on the line 3*-'3 otFigure f2, showing therlriving 'connection between 'the rockshafts-yand Figure 4: 1s a-d'etailed` sectional-view on the Aline of Figure 3.

In the selectedMembodi-ment oftliejinvention here shown, for purposes 'of disclosure, there 1s Villustrated 'a portion kof \a pum-p 4comprising the usual tubular memberwor standard `5 having a, pump rod "6 lreciproca-lly rod Y6 and securedthereto by means of la :pin 8.

The novel power transmission lmecha'nism featured in this invention comprises a casing 9 having ournals "'10 iadapted "to H receive a pair of rockshafts 1l Vand l2, as particu- -larly shown in'Figure A' cover-plate or closure 13 is demountably secured `to one side of the casing 9, whereby access may be had tothe interior of the casing. .Aijour-4 nal 14 is provided -in 'the cover-plate l1,3l

adapted'to'sup'port one end ofthe -rockshaft 12. Intermeshing gear segments and '11,6 aresecured, respectively, to theshafts 1'1 and 12 toprovide means foroperatively connecting together the two roekshafts, whereby they Vmay be simultaneously operated yin .op-

Oscillating arms aretermina'lly secure-d tothe Vroclcshafts lland `12. These xarms may `be either integrally forlned'with the shafts, .as shown in-FigureZ, or, if desired,`

they muy he iinlepeudeutly termed und et enred to the ehnitt'e. Siplit pivot hloeks :1re ndjuetuhlv secured to the oseillnt'ingg arms 17 hy m uns ot leek screws lil. Rods oilierntively Connect the pivot hloeleY t) with the Thend T, nt the upper end ol.' the pump rod G, wherehy, when the :i 'me li' :1re osoillated, n reeiproenl motion will he trainsiuitted to the pump rod. 'lhe :uljust'nhilitr ol' the pivot hloeks 1S upon the urine l? pro- Ill lill

vides menus whereinT the stroke o'l` the meehninism muY he i'nried to ndnpt it to the stroke olf the, pump rod.

A huh 22 is In'ovided upon the huh Jill ol" the gear segment l5 nud is nxinll f hored to relatively reeeive one end ot n (hive sl'm'l't 24, huving its internuulinte portion rotulively mounted in :1 journal ifo? provided in the cover-plete 13. A drive pinion tt is eeeured, to the drive shnfl't und meshes with n geur Q7 relatively mounted upon the, roekshnt't 1:2. (See Figure An eeeentrie :'28 is provided upon one side ol' the geur wheel 2T, und hns one end oilE u eonnertiuig rod or pitlnnn QS) rotntivel)Y mounted thereon, the other end et which is pivotnlly eonneeted t0 n Crunk urm ll hy menne oit' n shouldered stud 32. The crunk nrm 3l ie preferably integrally itormed upon the huh 23 of the geur segment l5.

Thus when the drive shaft Eet is rotntedj the gear 2T will he rotated upon the roekehnft 1Q, therein' 'rinsing' the eeeeutrie to :letunte the connecting rod 29, which. ns n result oit its eonneetion with the freer Fegment 15, hy menus ol" the crunk urm 'l, und shouldered studA 32, will cause the rock sluiil't 1l to be rocked in the journul lt) with the resultant oscillation ot' the erm t7 secured thereto. Such roekinpl ol5 the shrrlt l'l will 'in'lpzirt n similur movenient to the rook shurl't, 12, ns result of its geured Connection there with hy menus ol the geur segments l5 :ind 1li. The huh .22 ot the freni' segment 15 provides n .menus 'lor .eupporting` the inner end of the drive Shultz Ell-,nini the lutter in turn provides n, supporting menne l'or the inner `end of the roekshult l1, un reeult ot sueh eonneetiion. A Suitnhle pulle'v lgl. shown in dotted lines in Figure 2, muy he :sernred to the outer end o'l: the drive shulit 2l to provide menue `tor t' 'nnsmittiiur power thereto `from :i power deviee snel]` l'or iintunee. :is nn internal eomlnistionengine or u motor.

An importuut .leuture olE thin invention resides iu the eonstruetitm und :u'runnement `ot the parte nhove deeerihed, p:1rtieulnrl r the loezition ot the eruuk erm Ill. As shown in lfigure 3, it will. he noted that the erunk arm ll is mounted to operate nhove the horizontal center line ol'l the two roekshn'fts VIl und 1Q. Thus when the ineelninieni is oper` ated, and the Connecting' rod ie uetuuted hv the eccentric QS to oseillnte the Crunk erm 31,V the conneetin?T rod Q9 will he under ten- Leeriri sion during; the power or lifting letroke olf the oseill:dingI urnus l?. lily thus enunil'lg.,r the eonneetinT rod Blite he under tension while operating the olfeillnting arms to liilt the pump rod, the 'ioree exerted in the conneeting' rod will tend to pull the two roel-s shnl'tie' eloser together, therein,Y suhstnntinlly eounterneting the 'toreo exerted in the. jour nuls tendine` to spreud upiu't the shafts, reused hy the driving Conner-tion ol the teeth ol' the two geur segments. lt is well known in the operation olf peurs ot this type, thnt :1s the gwn' `teeth heeoiue worn, the pressure exerted ngniiiet the teetlu when operiitine under henry loud, hns n tendencyr Vto Spread npnrt their Sul'iport'ingr shulits. Thus, `hy mounting' the crunk erm ll :is nhove de serihed, thie tendency to spread npurt Vthe shnlts will he eouuterneted h v the notion olf the er'n'iueetintrg' rod 29 tending' to pull the two roekslnrtts closer together. lt has heen lound in netuul pruet ze, that hy mounting` lill the perte :is nhove deseril'ied, the useful li le ol' the leur teeth ol the Segments l? und. lll will he entlv prolonged.

Menus' nre provided upon the easing ,tor ndjuet'nhliv securing it to the pump stun du rd i?, ne shown in Figures l und 2. Suehmenu-`sv pretermhij,7 consists in the provision of n plnl'ulity of hoeses z3-1t intee'rnlly :formed upon the rear wall ol the, meting und outwardly extxnidiner tl'lere'lrom. A V-shnped weh l is provided between the upper heisses 34;, und n leimilnr weh 35 is provided hetween the lower hoesten. Thea-:e wehs 35 nre ndnpted'to engege the pump stundni'd 5, ns lshown in liiggure 2. rl`l1rended stud filtl nre mounted in the bosses 34 :md lieve clamping memhers 3.7 mounted thereon adapted to engnge the, etundnrd 5 to :uljustnhly und, elzunpingly seeure the pump (fusing thereto. Nutr; ltw ure terminnlly mounted upon the studs lt to clump the members 37 ugninfwzt the pump stundnrd 5.

Yl`his novel power trnirlluiesion meehnnisln inniY therefore r-eiulily und quickly he mounted upon the tuhuhu' memher or etnndnrd olf un ordinnri;l the oeeilletinu nrius 1T will he suihstnntiulll,r in :ilinement with the exis oil. the pump rod (L tlierehy relieving the pump rodot side strninfl, whieh nlso is nieeomplished :is result ol providing; two oseillntingi arms und eonneetingg' them tothe pump rod dialnetrieulliy (nipofite with respeet thereto, :xs Aehowu in Figure l. 'lhe ensing l) und the cover-pluto lil nlso provide un oiletie'ht housingl in whieh the drivingr meehnnism if; eontnin-ed, there/hv preventingl dirt und 'foreign imitler from comino` in eontnet therewith with its usual detrimental resulte und eliminnlingv the usuel (tenger prevnlent with devices oit this tvp@` ol'l having' the operating mechanism thereof expoeed. By ineens olf the adjust nhlv mounted pivot blocks, mounted upon the c ricillutpump. lVhen mounted thereon,

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lill) ing-arms 17, the-stroke of the mechanism 'maybe varied tofsuift t'liat ofthe reciprocal member to bev driven or V operated thereby',

thusprovidiiig such2 a- -device well adapted' prisiiiglin combination, Cpaced* rockshaits gea-red ltoge ther rdior simultaneous movement, an eccentric on oneof said shafts, afpit-man connecting the ecceiitric'with the otherof said shaftsfortransmitting power thereto, said pitman arranged to be under tensional strain during" its powerstroke, `thereby tending to hold the gears of the rockshafts Vin close intermeshing relation.

2. A device of the class described comprising in combination, a pair of spaced rockshafts, cured to said .rockshafts, an eccentric rotatably mounted upon one of the' shafts, a crank arm secured to the other shaft, and a pitman connecting the eccentric with the crank arm and adapted to transmit power thereto to rock the shafts during its tension stroke. e

3; A device of pricing in combination, spaced rockshafts geared together for simultaneous movement, oscillating arms secured to said rockshafts and having a connection with a reciprocal member, an eccentric mounted on one of said shafts, a pitman operatively connecting the eccentric with the other of said shafts for transmitting power thereto, said `pitinan arranged to exert its power stroke while under tensioiial strain, thereby exerting an inward force upon the rockshafts to hold the gears thereof in close internieshing relation during the working stroke of said arms.

d. A device of the class described, coinlirising in combination, a pair of spaced i'ocksliafts, one of the shafts being longer than the other, an eccentric rotatably mounted upon the longer shaft and having a connection with a driving means, a gear segment on said longer shaft, a crank arm secured to the shorter shaft, av gear segment also secured to the shorter shaft for transmitting power to the other shaft, and a pitman 4connecting' the eccent ic with the crank arm for transmitting power thereto, from the eccentric.

5. A device of the classdescribed, comprising in combination, a pair of rockshatts mounted :in spaced parallel relation, ournals therefor, gear segments connecting together said rockshafts for simultaneous operation and whereby said shafts will be operated in opposite directions, oscillating arms secured to said shafts and having connections with a reciprocating member, an eccentric rotatably intermeshing gear segments se-V,

the class described, coin-V mountedi uponl one 'off' saidf rockshafts, a crank arm secured `to= the other of said shafts and having; connection` withk the eccentric, ag' I drive'forsaid eccent ic, and said'eccentric and saidA crank arm beingmounted to counteract# lateral thrustiii said journals caused by saidlf'gearsegments during the workin-g stroke-of' said oscillating arms.

Gi ihdevice ofthe class described, coinpri'sing'i in'` combiiiatioma pair of rockshafts mounted in spaced parallel relation and having interinasliiiigl gear segments connecting them,togethery for simultaneous operation,

oscillating arms secured to said shafts andv having. 4connections withl al reciprocating member, an eccentric rotatablyv mounted upon one of said r-ocksliafts, a cranka-rm vsecured to the otherv of said shafts, a connecting rod operatively connecting together said eccentric andsaid crank arm, means for Y operating said eccentric to actuate said connectiiig rod, and said connecting r-od being adapted to be under tension during the working stroke 'of said oscillating arms, thereby exerting an inward thrust on said rockshaft-s substantially counter-acting the outward e thrust exerted thereagainst by the intermeshing engagement of the teeth of said gear segments.

7. Av device of the class described, comprising in combination, a pair of spaced rockshafts, means operatively connecting together said rockshafts and adapting them for simultaneous operation, an eccentric rotatably mounted upon one of said rockshafts, a crank arm secured to the other of said shafts, ,a pitman connecting the eccentric with` the crank arm forl transmitting power thereto,` Vand means for operating said eccentric to simultaneously rock said shafts.

8. A device of the class described, comprising in combinatioma pair of spaced rockshafts having interinesliing gear segments secured vthereto and adapted to simultaiieously operate said shafts in opposite directions, oscillating arms secured to said rockshafts and adapted to transmit reciprocal motion toa member, an eccentric rotatably mounted upon one of said rocksliafts, a crank arm secured to the other of said shafts, a pitman connecting the eccentric with the crank arm for transmitting `power thereto, and an operating'mechanism for said eccentric device whereby said shafts may be actuated to oscillate said arms.-

9. A power transmission mechanism for loperating a pump rod, said mechanism comprismg an oil-tight casing having means for securing it to a pump standard, a pair of rockshafts mounted ni journals in said casing, intermeshing gear segments secured to saidl shafts and adapted to simultaneously operate said shafts in opposite directions,

pump rod` un eccentric rotutvzlhiy mounted upon one ot seid rockshnfts, ai crank erin mounted upon the other ot Said shafts and having' n, connection With said eccentric, :i geur und pinion for opcrutingr seid eccentric, und Suid eccentric und crank erm being mounted to counteract outward interet thrust in Suid journals caused by the driving' connection Intween Seid Segmente, when said urine :iro heini: osoillnted to litt seid pump rod.

l0. A. power transmission mechanism for opernting :i pump rod, Suid mechanism coinpricing;r im oil-tight fusing having' Ineens for chimpingl)v securing itto n pump, :i pnr of rockshngtts mounted in seid casing and `ejem-od together tor simultaneous movement,

arms secured to seid rockshufts :uid mounted to osciltzite exterioriy oit sziid casing, means for pivotzdiy connecting seid arms with Suid pump rod in diemetrically opposite relation thereto, un eccentric device connected Vith seid rockshatts and adapted to exert an inward torce against sind rockstmtts to prevent; spreading thereof during the working stroke oit said nrlns, n, drive .shaft also mounted Within seid casing and having u geared connection with Suid eccentric device, and means exteriorly of Suid casing for rotatingr Suid drive shaft.

In Witness whereof, I have hereunto set my hund this 12th dey of Mey, 1926.

RALPH B. BUTTERBAUGH. 

